Thread: Noise in 300TDi

Originally Posted by bigcarle

the disco went in to the mechanics on Monday and i got the phone call today to say it was the harmonic balancer
and it had chewed out balancer and it was nearly ready to fall apart. good news is the crank if fine just needs a new key and
balancer, also apartently the balancer bolt had bottomed out.
thanks all for the input

Yep very common get a new bolt aswell i added an extra 3 mm washer to mine so i was sure it wouldnt bottom out

Mine just cut and sliced the woodruff key, then the balancer proceeded to spin up on the end of the shaft for a short while.
The end of the crank on mine now has very subtle grooves from the resultant mess, but the balancer still goes on tight and locks into place.

I thought that maybe the bolt had bottomed out on mine too, but I double checked the bolt length by screwing it in with the balancer off, and it drove in to a point leaving about half the thickness of the balancer .. so definitely didn't bottom out on mine.